CVE-2021-31209
No fix known EPSS 3%CVSS 6.5
Microsoft Exchange Server Spoofing Vulnerability
Products: Microsoft Exchange Server 2019 Cumulative Update 9, Microsoft Exchange Server 2016 Cumulative Update 20, Microsoft Exchange Server 2013 Cumulative Update 23, Microsoft Exchange Server 2016 Cumulative Update 19, Microsoft Exchange Server 2019 Cumulative Update 8